HOLE BUSTER™ SUPER
PREMIUM 3 FLATS ON SHANK

50-UB
Special Hi-Tungsteen tool steel, gold surface
treated body and clearance for maximum lubricity. These
reamers are especially designed for the reaming of structural
steel plate commonly found in truck frames, rail cars,
bridges and pressure vessels. For use only to enlarge
previously formed or drilled holes. All tools are constructed
with left hand spiral and right hand cut. The left hand
spiral eliminates the tendency of the reamer to hog into
holes. This feature makes a stop collar unnecessary.
PART
NO. |
DIAMETER |
POINT
DIAMETER |
MINIMUM
STARTING
HOLE SIZE |
OVERALL
LENGTH |
SHANK
DIAMETER |
| 06390 |
3/8 |
.250 |
5/16 |
4-5/8 |
3/8 |
| 06400 |
1/2 |
.281 |
3/8 |
5-7/8 |
1/2 |
| 06410 |
9/16 |
.343 |
7/16 |
5-7/8 |
1/2 |
| 06420 |
5/8 |
.343 |
7/16 |
6-3/8 |
1/2 |
| 06440 |
3/4 |
.406 |
1/2 |
6-7/8 |
1/2 |
| 06480 |
1 |
.594 |
7/8 |
6-7/8 |
1/2 |
|